Horror hostess character actress Elvira, real name Cassandra Peterson, recently went viral for saying at a a Knotts Berry Farm event that one of her worst celebrity encounters occurred when Grande brought a large group of friends and family to an Elvira performance and then refused to take a photo with Peterson.

Ariana Grande is apologizing after Cassandra Peterson, who plays horror character Elvira, recalled a bad encounter with the singer.

Ariana Grande is explaining how she remembers an encounter with Elvira after the Mistress of the Dark called out the pop star.